Walteb l



w. L. DIXON. AIR OPERATED ADAPTER FOR CLAMPING WORK WHILE TURNING.

APPLICATION FILED NOV,.I0| 1920- I 1,412, 170. Patented Apr. 11, 1922.

' had/e1 1615A TTORNEYS NT OFFICE.

WALTER L. nmon, or new BRUNSWICK, NEW JERSEY, ASSIGNbR T INTERNA- TIONAL MOTOR COMPANY, WARE.

OF NEW YORK, N. Y., A ('JORPORATION OF DELA- am-ormran ADAPTER FOR cmmrme wonx WHILE momma,

Application filed November 10, 1920. Serial No. 423,139.

To all whom it may concern:

Be it known that I, WALTER 'L. DIXON, a citizen of the United States, residing in the cityof New Brunswick, in the State of New Jersey, have invented certain new and useful Improvements inAir-Operated Adapters forClamping Work While Turning, of which the following is a specification, reference being had to the accompanying drawing, forminga part hereof.

This invention relates to an air operated adapter associated with a turning machine for clamping flanged work on an arbor for machining operations. The adapter illustrated in the embodiment is shown for clamping hub caps in place, but it will be understood as the description proceeds that the invention is broader than the embodiment illustrated and rests on a principle which can be incorporated in adapters for clamping work of other character. The principal object of the invention is to provide an air operated adapter which will-operate quickly to clamp work on an arbor and will operate quickly and positively to re lease the work when the operations are completed. Mechanically, the embodiment of the principle involves the translation of reciprocating motion into rotary motion by a vention, in which- Figure 1 is a view in longitudinal section of an arbor having associated therewith an air operated adapter embodying the improvements.

Figure 2 is a view in end elevation of the adapter shown in Figure 1.

The rotary head a has secured thereto a face plate I), as by means ,of bolts b, and

is chambered, as at a, to receive a reciprocating disc 0 carried on an an operated plunger (1. The disc 0 supports rotatably ring 9 is supported in the face therein one or more oscillating clamps e, 6',

In the preferred form of the invention the face plate 6 is channeled to receive an arbor sup ort the ring 9 of a size and shape to work'h illustrated as a hub cap. T e arbor plate 6 by means of bolts 2'. w

In the figures the hub cap it is shownas clamped on to the arbor ring of three clamping hooks e, e, 6 the hooked ends E of which overlie the flanged hub in the manner indicated in Figure 1. Atthis time it is evident that the air! plunger d has been retracted with the disc 0 to the left end of the chamber a, as viewed in Figure 1, thereby retracting each of the clamping pieces and impressing the hooks E firmly on to the'flange of the hub. At this time each.of the studs f rests in the longitudinal groove 6 in the periphery of the respective hooks, the corresponding one of which is c. When the air plunger d is moved towards the right, asviewed in Figure 1, the disc 0 with the clamping pieces 6, e, 6 will be moved towards the right and each of .these clamping pieces will be rotated about their respective axes by engagement of corresponding parts, such' as the spiral groove 6 with the stud f. Rotation of the clamping pieces will movethe hooked ends E away from the flange of the hub h, thereby permitting the work to be removed from the arbor. When the next piece of work is applied 9 by means Specification df Letters Patent. Patent d A 11 1922. I, i

to the arbor and the air plunger all moved with an arbor ring whose shoulder would conform to the diameter of the work to be supported. This removable arbor ring is a feature of importance in making the adapter suitable for difi'erent piecesof work.

, I claim as my invention:

1. An air operated adapter for clamping work While turning, comprising a rotary supporting head for the work, an air operated plunger movable axially therein, a clamping piece rotatably supported on the air operated plunger and movable axially therewith and a slot'and stud connection between the clamping piece and the head to effect rotative movement of the clamping piece upon reciprocation of the plunger;

2. An air operated adapter for clamping WALTER L. DIXON. 

